Elevator.



PATEN'TED JULY il, 1905.

L. H. N'IBLSSN.

BLEVATOR.

APPLIGATION FILED 00T. 1904.

No. 793Ql6. PATBNTED JULY 4, 1905.

L. H. NIELSEN.

BLEVATOR.

APPLIUMION FILED 00T. s, 1904.

3 SHEETS-SHEET 2.

I 4? @www mw PATENTED JULY Il, 1905.

L. H. NIELSEN.

BLEVATGR.

APPLIOATIQH FILED 00T. 1904.

3 SHEETS-SHBBT 3,

'lli'.l'wirniui trrlrrne Patented Jluly t, lgliiti.

trici-t SPEGEWCATIN forming part of Letters Patent No. 798,846, datedJuly el, 1905.

Application iiled October (i, 1904. Serial lilo. 227,347.

To al?, who/n, iff; 'ln/ty con/cera:

Be it known that l, LUDVIG lil. Nrnnsnu, a citizen of the United States,residing,I at Mc- Kees `Rocks, in the county oi Allegheny and State oi.'Alennsylvania, have invented certain new and useful improvements inElevators, ot which the 'following is a specilication, ret erence beinghad therein to the accompanyingl drawings, 'forming part ot' thespecilication, in which Figure l is a view in elevation, partly insection, ot an elevator-car equipped with my im proved door-opening'apparatus. Fig'. i is a detail view showiin;I the connection between themotor and the shitting` har. Fig. Z is a plan view ot a portion oii thccar, the doors beingl shown in section. liie. 3 is a iace view oi thedoors in their closed position with the locking,l and shifting'mechanism adapted to he engaged by the actuating' mechanism mounted onthe elevator-car. Fig'. dis a partial view similar to Fig'. il, showing;the piston oi" the cylinder extended to its limit of movement, the doorsbeing' indicated as open. Fig'. 5 is a sectional detail view ot thecylinder. Fig. 6 is a tace view ol a modified construction of thedoor-shiftingshoe. Fig. 7 ia a cross-section on the line Vil Vil oi'llig. 6. Fig. 8 is a detail view ot' the lock for the operatingmechanism. Fin'. 9 is a'sectional view on the line IX iK of Fig. Figs.l() and il are detail views oi' a modiiied term. of door shifting'lever.

My invention relates to improvements in apparatus or mechanism designedFor the purpose oi opening' and closing,` the doors of elevator-shaftsor other Similar structures, the invention being particularly designedto adaptation to the shafts ol passengerelevators.

A Afeature of importance and novelty in connection with the inventionconsists in means for engaging and lockirnc,l the elevator opera tivemechanism .so ae. to prevent the starting ot' the ca r until the doorshave been cloned.

Referring to the iflrawings, Q 2 represent sliding doorsI olu theelevator-shalt, suitably mounted in any doei rahle manner,as hy meansoi1 eheaveuvheela` or iloordninnera ot any pre ierrcd construction. llueolf auch doors, it

double is )rovided with a vertical livotallymounted i'langed shoe 3,having' a tilting bearu .ing fl on the door and limited range ot'movement against an abutment or Stop 5. '.lhe shoe is provided with anextended latch 7, arranged to engage a pin or abutment 8 by gravity onthe other door, so as to securely loch both together, and it will thushe seen that they cannot he opened until the Shoe is iii-st partiallytilted, as indicated in dotted lines in Fig. 3.

9 is a cylinder mounted upon the top oi the elevator-ca1', havingafluid-actuated piston, to the rod i0 of which is secured a shitting armll, adapted in the vertical movement of the elevator to regiater withinthe sides oi the shoe when the elevator isstopped opposite to one oi thedoorn. ,lhe arm l1. in n'lounted in any suitable elidinir cross-heini or`guides l2, and the moving' portion ol' the motor is provided with ahacliwardly-cxtcndiing har 13, connected to pieton Y1 0 orehiitinig' armil, ae shown, arranged to come into contact with thedownwardly-extendinn' lega)I of a bell-cranh level' la, so as to unlocka locl ing-har trom a notched segment l'i when the piston oi thecylinder is thrown hachwardly into ita initial petitionn as shown inliin. l. When the piston ie advanced, as in Fig. e. the har 13 travelsforwardly away trom contact with the lever ifi, allowing latch l5 todrop into the notch 1G of segment 17, thereby preveutiin;v the Start ingoi the car either up or down until the doors are again closed. Thecylinders are provided at each end with elongated slotted porta liti,with which connection is made, through suppii-nnental blocks lil, Afrompipesl 9.0 2.0, leading.; lrom the controlling-valve Qi, supplied with(,sonatant pressure hy l'iexiole tuhe or connection 22. These longnarrow slots tend to throttle the liuid in its eecape, thus cushioningrthe pieton againet either end of the cylinder and preventiiug' shock orlcnocli'inn'. ll desired, cushioliinggr euhstance ol' any suitablematerial, as ruhher, or metallic springs may he inserted to accompliahthe same object.

Vit will he understood that any other suit ahle motor may he used as asi lenoid-magnet desire to be limited to the particular motor shown anddescribed.

As thus constructed it will be seen that when the elevator is broughtinto register between the flanges of the shoe 3 and stopped, the shoebeing sutticieutlyv long to insure engagement, and pressure is appliedbehind the piston of the cylinder the arm ll will travel forward, firsttilting' the shoe and unlocling the other door and then moving bothdoors open until it has reached the limit of its travel. Upon reversingthe direction of the piston, arm 1l still being in register, the doorswill be closed, ag'ain locking them together by latch 7 falling down bygravity, latch l5 having been raised out of engagement, whereupon theelevator may again be started up or down.

In Figs. l() and ll I have shown a detail construction of a modifiedform of shoe-en gaging' arm in which the arm 1l' is provided with a pawlextension Q8, pivoted at 29 and provided with a spring' device 30,arranged to hold the pawl normally extended. The arm is so constructedas to allow the pawl to be deflected to one side or the other, asindicated in dotted lines, upon meeting with any obstruction in avertical direction in the elevator-shaft, but to be operative laterallyto engage the flanges of the door-shoe in either direction to move thedoor.

In Figs. 6 and 'T I have shown a modified construction of the doorwherein one of the flanged sides 23 is stationary, the other side 24being' pivoted thereto and being' capable of a slight backward movementbefore coming into contact with a blocl; or abutment Q5, the movablepart having secured to it a latch 26, arranged to engage and loch a pin27 on the other door in the same manner as has been already described.In Fig. 3 I have shown means for opening the doors by hand, lconsistingof a handle 3l, mounted in a cam-slot 32 and connected with rod 33,which raises the latch 7 as the handle is drawn back to open the door.

Having described my invention, what I claim isl. rI`he combination in anelevator, of a sliding door, and a moving device for the door providedwith a latch, an elevator-car, a motor mounted thereon arranged toengage the moving device, and means controlled by the movement of themotor for locking the stopping and starting mechanism of the elevator,substantially as set forth.

2. The combination with the sliding' door of an elevator-shaft providedwith aflanged shoe, of a motor mounted upon the elevator-car providedwith means for registering with and en gaging said shoe to move thedoor, means for stopping and starting the mechanism of the car, andmeans connecting the shoe-moving mechanism and the stopping and startingmechanism, substantially as set forth.

3. The combination with the door of an elevator-shaft provided with atianged shoe, of a car, a fluid-actuated piston and cylinder mounted onthe car, an arm connected therewith adapted to engage the shoe, alocking device arranged to engage the controlling mechanism of the car,and an element connected with the movable piston arranged to actuatesaid locking mechanism, substantially as set forth.

e. The combination with an elevator-car and a shifting door openingthereinto; of a cylinder' provided with a fluidactuated piston mountedon the car and provided with a doorshifting terminal, means mounted onthe door arranged to be engaged by said terminal, a movable barconnected therewith, a locking'- arm, and a lever connected with saidarm arranged to be actuated by said movable bar, substantially as setforth.

5. The combination with an elevator-car and a shifting door opening'thereinto; of a cylinder provided with a duid-actuated piston mounted onthe car and provided with a doorshifting terminal, means mounted on thedoor arranged to be engaged by said terminal, a movable bar connectedtherewith, a loclingarm, and a lever connected with said arm arranged tobe actuated by said movable bar, with controlling mechanism for theelevator provided with a locking device adapted to be engaged by saidlocking-bar, substantially as set forth.

In testimony whereof I atHX my signature in presence of two witnesses.

LUDVIG H. NIELSEN.

IYitnesses:

Janus MCC. MILLER, C. M. CLARKE.

